Separating member for jordan engines



y A. L'.E R. BOLTON 2,156,335

SEPARATING MEMBER FOR JORDAN ENGINES Filed April 16, 1935 wwz hh Patented May 2, 1939 UNITED STATES PATENT orriog SEPARATING MEMBER FOR JORDAN ENGINES Application April 16, 1935, Serial No. 16,617

1 Claim.

This invention relates to Jordan engines for refining paper pulp stock. Such engines include a truncated conical shell in which a truncated conical plug revolves at very high speed.

In the usual construction, the plug is provided with outwardly extending straight bars, some extending from the large to the small end, and some extending part way, usually in a plane which would pass through the axis of the plug, while the knives which project inward from the shell are bent angularly, and are separated by angularly shaped separators of wood or other suitable material. There are usually two or three conical sections placed end to end, so that the stock flowing from the small to the large end between the knives, changes direction slightly several times, its flow being, therefore, interrupted. This interruption or change of direction helps, with centrifugal force and the cone shape, to cause the stock to flowover the knives between them and the bars of the plug in a more or less spiral direction, and in so doing, to be beaten or cut as desired.

While the channels between the bars on the plug are comparatively straight and widen from the small to the large end, the stock on account of centrifugal force is driven out radially against the knives of the shell with great force, and this tends to stop it from flowing through the plug channels too rapidly.

However, as part of or associated with most shell linings, there is an angular metal member known as an anchor bar having slots through which bolts or screws pass to fasten it to the lining, one purpose being to prevent the lining from revolving or moving separately from the shell. There are also parts known as cheek pieces between which is driven a wedge of metal or wood, the purpose of the cheek pieces being to provide a tapered recess into which the tightening or fitting wedge can be driven.

As now made, the cheek piece or pieces and the wedge or wedges, are of less height than the knives, usually corresponding in height or thickness with the separators and providing a substantially unobstructed channel through which the stock can. run freely from the small to the large end.

It is the purpose of this invention to so make such separating members for a Jordan engine that they will obstruct the free passage of the stock and will preferably provide additional brushing of cutting edges to co-operate with the brushing or cutting edges of the shell knives and plug bars.

This is accomplished by forming such a member with a part which corresponds in height with the separators, and a part which corresponds in height, and preferably in shape, with the knives or bars. By so doing, the size of the channel is reduced or obstructed and the number of brushing or cutting edges is increased without increasing the number of members in the shell lining.

By stock treating members, I include shell knives and plug bars or either of them.

The term separator or the term separating members as used in this specification and claim, is intended to distinguish from the bars and knives of the Jordan shell and plug from the following fact.

In both the shell and the plug, as ordinarily made, the knives project from the shell and the bars from the plug, so that their edges almost touch. They are now almost universally made of metal as they must have great strength, not only for working good stock, but to stand up against poor stock and impurities.

On the other hand, the, members, whether an gular wooden fillers, anchor bar, cheek pieces, wedges or the wedge-shaped separators on the plug, receive a great deal of wear, but ordinarily do not get the shocks received by the knives and bars.

In the old type of filling which was not preassembled, in the shell, knives and separators supported each other because they were on the inside of a curve, but in the plug, the bars were fastened in some way, while the separators were merely driven down into place.

What I intend to cover by the word separators is members whose function is to be positioned between the knives or bars, and which are generally of less height. I intend to cover all such members which have one substantially level surface, the height of which is less than the knives or bars with which it is to be associated, and another part, of less area, but which has one or more projections from this surface, whether such projections are as high as the knives or bars, so that the edges of the projections may cut or work on the stock, or are of less height so that these portions act only as bafiles or dams.

In the drawing, Fig. 1 is a side elevation with parts broken away, of a typical Jordan engine shell and plug.

Fig. 2 is an elevation from the large end of a Jordan engine shell showing the lining in place, such lining including knives, wooden separators, anchor bar, cheek pieces, and wedge, the view being somewhat exaggerated and representing either one of several sections of a lining or a complete lining.

Fig. 3 is a perspective view of one type of wedge and Fig. 4 is an elevation from the large end of the wedge shown in Fig. 3.

Fig. 5 is a perspective view of another type of wedge.

In the drawing, represents the fixed Jordan shell body with a lining L which may be of any known type, including stock treating members which may be knives of the usual form, and separators which may be those of the usual wooden type, together with an anchor bar, cheek pieces and wedge, some or all such separators having a low part and a high part, as will be described.

P represents a plug body, the outside or lining of which is indicated by M. This outside or lin ing is made up of the usual straight plug bars B which form the stock treating members. Between the bars B are separators which include a low part and ahigh part of any of the types hereinafter described.

Fig. 2 is an end elevation from the large end of a Jordan shell and lining, some of the separators being of the type hereinafter described.

In Figs. 3 and 4, W-l represents an all-metal wedge suitable for use in a Jordan shell, comprising a low part I, and the high parts, including the short ribs or knives 22, a longer knife or stock treating part 3, and the still longer high stock treating parts 4-4.

In Fig. 5, W2 shows another form of allmetal Jordan shell wedge, including the low part 5 and a. plurality of diagonal, integral projecting ribs or stock treating members 66. These diagonal members can be of any desired slant and shape, and may be of a height equal to the knives in the shell or a less height, as desired. Their function may be to cooperate with the bars in the plug in cutting or brushing the stock, or may be merely to alter the direction or to delay the flow of the stock between the plug and the shell.

I claim:

A bodily transportable all metal separator for a Jordan engine having spaced paper stock treating members, which separator includes a low part of substantially uniform level and high parts along the edges and away from the edges of such size and shape as to cooperate with the paper stock treating members.

ARCHER LE ROY BOLTON. 

